Special order – Usually takes 2-3 weeks – Click here for more information!
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What does the phrase 'Will be special ordered for you' entail?
This indicates that the product is not currently stocked in our warehouse. We procure 'Special Order' items directly from the supplier upon receiving your order. Typically, we do not maintain inventory for these items.
'Special Order' products may either be shipped directly from the supplier or routed through our facilities before reaching you. The available shipping options will be presented during the checkout process.
Once you place an order for a Special Order item, we will specially order it for you, and there is a restocking fee of up to 15% depending on the item in case of cancellations.
As Roco 4x4, we commit to providing updates on your order within a maximum of 2 business days, offering an estimated time of arrival (ETA) for the item. In the event that the item is discontinued, we will promptly notify you.
The Small-block Chevy cylinder head is designed for 1987-95 Throttle Body Injected (T.B.I.) and Tuned Port Injected (T.P.I.) 5.7L S/B Chevy engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1987-95, 73° angle on the two center bolts. Will maintain stock compression ratio when used with the recommended head gasket. The Corvette centerbolt cylinder head is designed for 1986-91 Tuned Port Injected (T.P.I) 5.7L small-block Chevy Corvette engines originally equipped with centerbolt valve covers. Performer centerbolt cylinder heads are 50-state street legal and accept factory centerbolt valve covers. The intake bolt pattern utilizes the 1986-91 (straight) 90° angle on all bolts. Spark plugs are angled like stock O.E. heads. INSTALLATION NOTE: Match with Edelbrock head gasket sets. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4" reach with flat gasket seat. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Edelbrock pushrods #9632 are recommended. Requires hardened pushrods. Pedestal mount rockers. When using hot air choke Q-Jet carbs, choke kit #1932 is required. Intended for use on small-bore (3.736" - 4.00") 265, 283, 305 & 307 engines. Deck thickness: 9/16", rocker stud diameter: 3/8", pushrod diameter: 5/16" (width of slot in guide plate).
